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t in (-oo:+oo)
(-3/4)*t-(4*(3/5-((5/4)*t))) = (9*t)/4+47/5 // - (9*t)/4+47/5
(-3/4)*t-(4*(3/5-((5/4)*t)))-((9*t)/4)-(47/5) = 0
(-3/4)*t-4*((-5/4)*t+3/5)+(-9/4)*t-47/5 = 0
(-3*t)/4-4*(3/5-5/4*t)+(-9*t)/4-47/5 = 0
(-4*4*5*(3/5-5/4*t))/(4*5)+(-3*5*t)/(4*5)+(-9*5*t)/(4*5)+(-47*4)/(4*5) = 0
-4*4*5*(3/5-5/4*t)-3*5*t-9*5*t-47*4 = 0
85*t-45*t-188-48 = 0
40*t-188-48 = 0
40*t-236 = 0
(40*t-236)/(4*5) = 0
(40*t-236)/(4*5) = 0 // * 4*5
40*t-236 = 0
40*t-236 = 0 // + 236
40*t = 236 // : 40
t = 236/40
t = 59/10
t = 59/10
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